83790-99-2Relevant academic research and scientific papers
SELECTIVE METHODS FOR THE SYNTHESIS OF POLY(ORGANYLTHIO)- AND POLY(ORGANYLSULPHONYL)-SUBSTITUTED ETHENES FROM POLYCHLOROETHENES
Prilezhaeva, Elena N.,Donzova, Natalia E.,Petukhova, Nina P.,Bogdanov, Valentin S.
, p. 235 - 240 (2007/10/02)
A simple general method for the total substitution of chlorines in polychloroethenes by organylthio groups and its modifications allowing to stop the substitution selectively at a given number of chlorine atoms are reported.Trifluoroperacetic acid (in dichloromethane) is proposed as the oxidant of choice for obtaining the hitherto unknown sulphonylethenes with four and three sulphonyl groups from the corresponding poly(organylthio)ethenes.
FREE-RADICAL REACTION OF DIARYL DISULFIDES WITH TRI- AND TETRACHLOROETHYLENES
Martynov, A. V.,Mirskova, A. N.,Voronkov, M. G.
, p. 20 - 25 (2007/10/02)
The free-radical reaction of diaryl disulfides ArSSAr with CHCl=CCl2 leads to aryl β,β- and α,β-dichlorovinyl sulfides, trichlorovinyl sulfides, and the trichloroethylene dimer 1,1,3,3,4,4,-hexachloro-1-butene.In the reaction of diaryl disulfides with tetrachloroethylene aryl trichlorovinyl sulfides and hexachloro-1,3-butadiene are formed.A reaction mechanism involving reaction of the vinyl radicals CCl2=C.Cl, CCl2=C.H, adn CHCl-C.Cl with the arylthiyl radical is proposed.
FREE-RADICAL REACTION OF ARENETHIOLS WITH TETRACHLOROETHYLENE
Martynov, A. V.,Mirskova, A. N.,Voronkov, M. G.
, p. 1635 - 1640 (2007/10/02)
The reaction of arenethiols ArSH (Ar = p-Tol, Ph, 4-ClC6H4) with tetrachloroethylene, initiated by UV irradiation or benzoyl peroxide, leads to the formation of mixtures of unsaturated and saturated products, i.e., aryl α,β-dichlorovinyl and β,β-dichlorovinyl sulfides, trichlorovinyl sulfides, 1,1,2,2-tetrachloroethyl and 1,2,2,2-tetrachloroethyl sulfides, diaryl disulfides, and isomeric diarylthiodichloroethenes.During discussion of the reaction mechanism, which involves reaction of the ArS radical with the tetrachloroethylene, evidence is given in favor of an α,β-chlorotropic rearrangement of the intermediate radical ArSCCl2CCl2 to the radical ArSCClCCl3.After the appropriate treatment it is possible to isolate the aryl trichlorovinyl sulfides in a mixture with small amount of aryl α,β-dichlorovinyl and aryl β,β-dichlorovinyl sulfides.
